Defective pixel compensation system and display device using the system

a compensation system and pixel technology, applied in the field of projection display devices, can solve problems such as deteriorating the quality of displayed images, and achieve the effects of reducing the perceptibility of defective pixels, increasing the brightness of adjacent pixels, and minimizing image deterioration
US20060176935A1Inactive Publication Date: 2006-08-10SEMICON ENERGY LAB CO LTD
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SEMICON ENERGY LAB CO LTD
Publication Date
2006-08-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

With respect to a display device having a high-resolution display panel, It makes possible to prevent to deteriorate the display quality by a dot defect . A display panel having a dot defect is identified and coordinates of the defective pixel are determined. The brightnesses of pixels adjacent to the defective pixel and / or the brightnesses of pixels of other display panels having the corresponding coordinates as the dot defect are increased to reduce the apparent perceptibility of the dot defect.
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Description

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] The present invention relates generally to projection display devices, and more particularly, to an active matrix type projection display device, typically a rear projection type or a front projection type liquid crystal display device.

[0003] 2. Description of the Related Art

[0004] The development of techniques for manufacturing semiconductor devices, such as a thin-film transistor (TFT), having a semiconductor thin film formed on a low-priced glass substrate, has recently been promoted with the increase in demand for active matrix liquid crystal display devices (liquid crystal panels).

[0005] Also, projection type liquid crystal display devices (liquid crystal projectors) have attracted attention, in which pixel portions of liquid crystal panels are irradiated with strong light from a light source, and light passed through the pixel portions is projected to a screen through a lens to form an enlarged image which ...

Claims

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